Transient Thermal Model for Proton Exchange Membrane Fuel Cells

Khemili, Faycel; Najjari, Mustapha; Nasrallah, Sassi Ben

doi:10.1115/1.4005614

Cited by 3 publications

(1 citation statement)

References 11 publications

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“…The development of a theoretical model of the PEMFC as well as corresponding analysis, are crucial to gain a good understanding of the effect of the operating conditions on the cell potential. Most of the studies in this area has assumed for simplicity constant porosity of the GDL [11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Analytical analysis of the effects of the porosity distribution on liquid-water management in the cathode of a polymer electrolyte membrane fuel cell

Khemili,

Najjari

2023

Preprint

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Proton Exchange Membrane Fuel Cell (PEMFC) technology has been receiving more attention recently and can play a more expanded role in space missions with low gravity or microgravity. The liquid water generation in the Gas Diffusion Layer (GDL) of a Proton Exchange Membrane Fuel Cell (PEMFC) increases the resistance to oxygen flow toward the catalyst layer. Water flooding inside the GDL can affect the PEMFC performance especially at higher current densities. Therefore, a good understanding of the effect of liquid water amount in the GDL is crucial to water management and, subsequently, to the performance of the fuel cell. The purpose of the present study is to investigate the effect of the microstructure characteristics of the GDL on the water flooding and liquid water distribution inside the GDL. A one-dimensional theoretical model has been developed. Results indicate that the porosity gradient has a significant effect on the liquid water saturation and the performance of the PEM fuel cell.

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Section: Introductionmentioning

confidence: 99%

Analytical analysis of the effects of the porosity distribution on liquid-water management in the cathode of a polymer electrolyte membrane fuel cell

Khemili,

Najjari

2023

Preprint

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Effects of the Porosity Distribution on Liquid–Water Transport in the Cathode of a PEMFC Fuel Cell

Khemili,

Najjari

2024

Green Energy and Technology

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Cooling strategy for effective automotive power trains: 3D thermal modeling and multi-faceted approach for integrating thermoelectric modules into proton exchange membrane fuel cell stack

Mayyas

Ramani

Kannan

et al. 2014

International Journal of Hydrogen Energy

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Current hybrid vehicle and/or Fuel Cell Vehicle (FCV) use both FC and an electric system. The sequence of the electric power train with the FC system is intended to achieve both better fuel economies than the conventional vehicles and higher performance. Current hybrids use regenerative braking technology, which converts the vehicles kinetic energy into electric energy instead of wasting it. A hybrid vehicle is much more fuel efficient than conventional Internal Combustion (IC) engine and has less environmental impact.The new hybrid vehicle technology with it's advanced with configurations (i.e.Mechanical intricacy, advanced driving modes etc) inflict an intrusion with the existing Thermal Management System (TMS) of the conventional vehicles. This leaves for the opportunity for now thermal management issues which needed to be addressed. Till date, there has not been complete literature on thermal management issued of FC vehicles. The primary focus of this dissertation is on providing better cooling strategy for the advanced power trains. One of the cooling strategies discussed here is the thermo-electric modules.The 3D Thermal modeling of the FC stack utilizes a Finite Differencing heat approach method augmented with empirical boundary conditions is employed to develop 3D thermal model for the integration of thermoelectric modules with Proton Exchange Membrane fuel cell stack. Hardware-in-Loop was designed under pre-defined drive cycle to obtain fuel cell performance parameters along with anode and cathode gas flow-rates and surface temperatures. The FC model, combined experimental and finite differencing nodal net work simulation modeling approach which implemented heat generation across the stack to depict the chemical composition process. The structural ii and temporal temperature contours obtained from this model are in compliance with the actual recordings obtained from the infrared detector and thermocouples. The Thermography detectors were set-up through dual band thermography to neutralize the emissivity and to give several dynamic ranges to achieve accurate temperature measurements. The thermocouples network was installed to provide a reference signal.The model is harmonized with thermo-electric modules with a modeling strategy, which enables optimize better temporal profile across the stack. This study presents the improvement of a 3D thermal model for proton exchange membrane fuel cell stack along with the interfaced thermo-electric module. The model provided a virtual environment using a model-based design approach to assist the design engineers to manipulate the design correction earlier in the process and eliminate the need for costly and time

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Transient Thermal Model for Proton Exchange Membrane Fuel Cells

Cited by 3 publications

References 11 publications

Analytical analysis of the effects of the porosity distribution on liquid-water management in the cathode of a polymer electrolyte membrane fuel cell

Analytical analysis of the effects of the porosity distribution on liquid-water management in the cathode of a polymer electrolyte membrane fuel cell

Effects of the Porosity Distribution on Liquid–Water Transport in the Cathode of a PEMFC Fuel Cell

Cooling strategy for effective automotive power trains: 3D thermal modeling and multi-faceted approach for integrating thermoelectric modules into proton exchange membrane fuel cell stack

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